On quantum cohomology of Grassmannians of isotropic lines, unfoldings of $A_n$-singularities, and Lefschetz exceptional collections

John Alexander Cruz Morales, Alexander Kuznetsov, Anton Mellit +2

The subject of this paper is the big quantum cohomology rings of symplectic isotropic Grassmannians $\text{IG}(2,2n)$. We show that these rings are regular. In particular, by "gen…